^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * IPWireless 3G PCMCIA Network Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Original code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * by Stephen Blackheath <stephen@blacksapphire.com>,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Ben Martel <benm@symmetric.co.nz>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyrighted as follows:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Various driver changes and rewrites, port to new kernels
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Copyright (C) 2006-2007 Jiri Kosina
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * Misc code cleanups and updates
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * Copyright (C) 2007 David Sterba
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/ppp_defs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/if.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/ppp-ioctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/serial.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/tty.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/tty_driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/tty_flip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include "tty.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include "network.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include "hardware.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include "main.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define IPWIRELESS_PCMCIA_START (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define IPWIRELESS_PCMCIA_MINORS (24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define IPWIRELESS_PCMCIA_MINOR_RANGE (8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define TTYTYPE_MODEM (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define TTYTYPE_MONITOR (1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define TTYTYPE_RAS_RAW (2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct ipw_tty {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct tty_port port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct ipw_hardware *hardware;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) unsigned int channel_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) unsigned int secondary_channel_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) int tty_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct ipw_network *network;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) unsigned int control_lines;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct mutex ipw_tty_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) int tx_bytes_queued;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) int closing;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static struct ipw_tty *ttys[IPWIRELESS_PCMCIA_MINORS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static struct tty_driver *ipw_tty_driver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static char *tty_type_name(int tty_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static char *channel_names[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) "modem",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) "monitor",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) "RAS-raw"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return channel_names[tty_type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static struct ipw_tty *get_tty(int index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * The 'ras_raw' channel is only available when 'loopback' mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * is enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * Number of minor starts with 16 (_RANGE * _RAS_RAW).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (!ipwireless_loopback && index >=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) IPWIRELESS_PCMCIA_MINOR_RANGE * TTYTYPE_RAS_RAW)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return ttys[index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static int ipw_open(struct tty_struct *linux_tty, struct file *filp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct ipw_tty *tty = get_tty(linux_tty->index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (!tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) mutex_lock(&tty->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (tty->port.count == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) tty->tx_bytes_queued = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) tty->port.count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) tty->port.tty = linux_tty;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) linux_tty->driver_data = tty;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) tty->port.low_latency = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (tty->tty_type == TTYTYPE_MODEM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) ipwireless_ppp_open(tty->network);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) mutex_unlock(&tty->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static void do_ipw_close(struct ipw_tty *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) tty->port.count--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (tty->port.count == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct tty_struct *linux_tty = tty->port.tty;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (linux_tty != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) tty->port.tty = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) linux_tty->driver_data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (tty->tty_type == TTYTYPE_MODEM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) ipwireless_ppp_close(tty->network);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static void ipw_hangup(struct tty_struct *linux_tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) struct ipw_tty *tty = linux_tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (!tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) mutex_lock(&tty->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) if (tty->port.count == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) mutex_unlock(&tty->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) do_ipw_close(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) mutex_unlock(&tty->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) static void ipw_close(struct tty_struct *linux_tty, struct file *filp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) ipw_hangup(linux_tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) /* Take data received from hardware, and send it out the tty */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) unsigned int length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) int work = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) mutex_lock(&tty->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (!tty->port.count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) mutex_unlock(&tty->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) mutex_unlock(&tty->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) work = tty_insert_flip_string(&tty->port, data, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) if (work != length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) ": %d chars not inserted to flip buffer!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) length - work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) if (work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) tty_flip_buffer_push(&tty->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static void ipw_write_packet_sent_callback(void *callback_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) unsigned int packet_length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) struct ipw_tty *tty = callback_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * Packet has been sent, so we subtract the number of bytes from our
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * tally of outstanding TX bytes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) tty->tx_bytes_queued -= packet_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) static int ipw_write(struct tty_struct *linux_tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) const unsigned char *buf, int count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct ipw_tty *tty = linux_tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) int room, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (!tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) mutex_lock(&tty->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (!tty->port.count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) mutex_unlock(&tty->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (room < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) room = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) /* Don't allow caller to write any more than we have room for */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (count > room)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) count = room;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (count == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) mutex_unlock(&tty->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) ret = ipwireless_send_packet(tty->hardware, IPW_CHANNEL_RAS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) buf, count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) ipw_write_packet_sent_callback, tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) mutex_unlock(&tty->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) tty->tx_bytes_queued += count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) mutex_unlock(&tty->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) static int ipw_write_room(struct tty_struct *linux_tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) struct ipw_tty *tty = linux_tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) int room;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) /* FIXME: Exactly how is the tty object locked here .. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (!tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (!tty->port.count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) if (room < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) room = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) return room;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) static int ipwireless_get_serial_info(struct tty_struct *linux_tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) struct serial_struct *ss)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) struct ipw_tty *tty = linux_tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (!tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (!tty->port.count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) ss->type = PORT_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) ss->line = tty->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) ss->baud_base = 115200;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) static int ipwireless_set_serial_info(struct tty_struct *linux_tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) struct serial_struct *ss)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return 0; /* Keeps the PCMCIA scripts happy. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) static int ipw_chars_in_buffer(struct tty_struct *linux_tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) struct ipw_tty *tty = linux_tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) if (!tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) if (!tty->port.count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) return tty->tx_bytes_queued;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static int get_control_lines(struct ipw_tty *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) unsigned int my = tty->control_lines;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) unsigned int out = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (my & IPW_CONTROL_LINE_RTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) out |= TIOCM_RTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) if (my & IPW_CONTROL_LINE_DTR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) out |= TIOCM_DTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) if (my & IPW_CONTROL_LINE_CTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) out |= TIOCM_CTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (my & IPW_CONTROL_LINE_DSR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) out |= TIOCM_DSR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) if (my & IPW_CONTROL_LINE_DCD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) out |= TIOCM_CD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) return out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) static int set_control_lines(struct ipw_tty *tty, unsigned int set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) unsigned int clear)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) if (set & TIOCM_RTS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) if (tty->secondary_channel_idx != -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) ret = ipwireless_set_RTS(tty->hardware,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) tty->secondary_channel_idx, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (set & TIOCM_DTR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) if (tty->secondary_channel_idx != -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) ret = ipwireless_set_DTR(tty->hardware,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) tty->secondary_channel_idx, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) if (clear & TIOCM_RTS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) if (tty->secondary_channel_idx != -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) ret = ipwireless_set_RTS(tty->hardware,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) tty->secondary_channel_idx, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) if (clear & TIOCM_DTR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) if (tty->secondary_channel_idx != -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) ret = ipwireless_set_DTR(tty->hardware,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) tty->secondary_channel_idx, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) static int ipw_tiocmget(struct tty_struct *linux_tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) struct ipw_tty *tty = linux_tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) /* FIXME: Exactly how is the tty object locked here .. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) if (!tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) if (!tty->port.count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return get_control_lines(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) ipw_tiocmset(struct tty_struct *linux_tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) unsigned int set, unsigned int clear)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) struct ipw_tty *tty = linux_tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) /* FIXME: Exactly how is the tty object locked here .. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) if (!tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) if (!tty->port.count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) return set_control_lines(tty, set, clear);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) static int ipw_ioctl(struct tty_struct *linux_tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) struct ipw_tty *tty = linux_tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) if (!tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) if (!tty->port.count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) /* FIXME: Exactly how is the tty object locked here .. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (tty->tty_type == TTYTYPE_MODEM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) case PPPIOCGCHAN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) int chan = ipwireless_ppp_channel_index(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) tty->network);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) if (chan < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (put_user(chan, (int __user *) arg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) case PPPIOCGUNIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) int unit = ipwireless_ppp_unit_number(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) tty->network);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) if (unit < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (put_user(unit, (int __user *) arg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) case FIONREAD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) int val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) if (put_user(val, (int __user *) arg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) case TCFLSH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) return tty_perform_flush(linux_tty, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) return -ENOIOCTLCMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) static int add_tty(int j,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) struct ipw_hardware *hardware,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) struct ipw_network *network, int channel_idx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) int secondary_channel_idx, int tty_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) ttys[j] = kzalloc(sizeof(struct ipw_tty), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) if (!ttys[j])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) ttys[j]->index = j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) ttys[j]->hardware = hardware;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) ttys[j]->channel_idx = channel_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) ttys[j]->secondary_channel_idx = secondary_channel_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) ttys[j]->network = network;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) ttys[j]->tty_type = tty_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) mutex_init(&ttys[j]->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) tty_port_init(&ttys[j]->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) tty_port_register_device(&ttys[j]->port, ipw_tty_driver, j, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) ipwireless_associate_network_tty(network, channel_idx, ttys[j]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) if (secondary_channel_idx != -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) ipwireless_associate_network_tty(network,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) secondary_channel_idx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) ttys[j]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) /* check if we provide raw device (if loopback is enabled) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) if (get_tty(j))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) printk(KERN_INFO IPWIRELESS_PCCARD_NAME
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) ": registering %s device ttyIPWp%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) tty_type_name(tty_type), j);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) struct ipw_tty *ipwireless_tty_create(struct ipw_hardware *hardware,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) struct ipw_network *network)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) int i, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) for (i = 0; i < IPWIRELESS_PCMCIA_MINOR_RANGE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) int allfree = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) for (j = i; j < IPWIRELESS_PCMCIA_MINORS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) j += IPWIRELESS_PCMCIA_MINOR_RANGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) if (ttys[j] != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) allfree = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) if (allfree) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) j = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) if (add_tty(j, hardware, network,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) IPW_CHANNEL_DIALLER, IPW_CHANNEL_RAS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) TTYTYPE_MODEM))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) j += IPWIRELESS_PCMCIA_MINOR_RANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) if (add_tty(j, hardware, network,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) IPW_CHANNEL_DIALLER, -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) TTYTYPE_MONITOR))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) j += IPWIRELESS_PCMCIA_MINOR_RANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) if (add_tty(j, hardware, network,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) IPW_CHANNEL_RAS, -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) TTYTYPE_RAS_RAW))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) return ttys[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) * Must be called before ipwireless_network_free().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) void ipwireless_tty_free(struct ipw_tty *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) int j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) struct ipw_network *network = ttys[tty->index]->network;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) for (j = tty->index; j < IPWIRELESS_PCMCIA_MINORS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) j += IPWIRELESS_PCMCIA_MINOR_RANGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) struct ipw_tty *ttyj = ttys[j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) if (ttyj) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) mutex_lock(&ttyj->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) if (get_tty(j))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) printk(KERN_INFO IPWIRELESS_PCCARD_NAME
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) ": deregistering %s device ttyIPWp%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) tty_type_name(ttyj->tty_type), j);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) ttyj->closing = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) if (ttyj->port.tty != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) mutex_unlock(&ttyj->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) tty_vhangup(ttyj->port.tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) /* FIXME: Exactly how is the tty object locked here
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) against a parallel ioctl etc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) /* FIXME2: hangup does not mean all processes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) * are gone */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) mutex_lock(&ttyj->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) while (ttyj->port.count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) do_ipw_close(ttyj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) ipwireless_disassociate_network_ttys(network,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) ttyj->channel_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) tty_unregister_device(ipw_tty_driver, j);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) tty_port_destroy(&ttyj->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) ttys[j] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) mutex_unlock(&ttyj->ipw_tty_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) kfree(ttyj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) static const struct tty_operations tty_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) .open = ipw_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) .close = ipw_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) .hangup = ipw_hangup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) .write = ipw_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) .write_room = ipw_write_room,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) .ioctl = ipw_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) .chars_in_buffer = ipw_chars_in_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) .tiocmget = ipw_tiocmget,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) .tiocmset = ipw_tiocmset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) .set_serial = ipwireless_set_serial_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) .get_serial = ipwireless_get_serial_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) int ipwireless_tty_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) ipw_tty_driver = alloc_tty_driver(IPWIRELESS_PCMCIA_MINORS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) if (!ipw_tty_driver)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) ipw_tty_driver->driver_name = IPWIRELESS_PCCARD_NAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) ipw_tty_driver->name = "ttyIPWp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) ipw_tty_driver->major = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) ipw_tty_driver->minor_start = IPWIRELESS_PCMCIA_START;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) ipw_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) ipw_tty_driver->subtype = SERIAL_TYPE_NORMAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) ipw_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) ipw_tty_driver->init_termios = tty_std_termios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) ipw_tty_driver->init_termios.c_cflag =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) B9600 | CS8 | CREAD | HUPCL | CLOCAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) ipw_tty_driver->init_termios.c_ispeed = 9600;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) ipw_tty_driver->init_termios.c_ospeed = 9600;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) tty_set_operations(ipw_tty_driver, &tty_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) result = tty_register_driver(ipw_tty_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) if (result) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) printk(KERN_ERR IPWIRELESS_PCCARD_NAME
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) ": failed to register tty driver\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) put_tty_driver(ipw_tty_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) void ipwireless_tty_release(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) ret = tty_unregister_driver(ipw_tty_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) put_tty_driver(ipw_tty_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) printk(KERN_ERR IPWIRELESS_PCCARD_NAME
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) ": tty_unregister_driver failed with code %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) int ipwireless_tty_is_modem(struct ipw_tty *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) return tty->tty_type == TTYTYPE_MODEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) ipwireless_tty_notify_control_line_change(struct ipw_tty *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) unsigned int channel_idx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) unsigned int control_lines,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) unsigned int changed_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) unsigned int old_control_lines = tty->control_lines;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) tty->control_lines = (tty->control_lines & ~changed_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) | (control_lines & changed_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) * If DCD is de-asserted, we close the tty so pppd can tell that we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) * have gone offline.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) if ((old_control_lines & IPW_CONTROL_LINE_DCD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) && !(tty->control_lines & IPW_CONTROL_LINE_DCD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) && tty->port.tty) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) tty_hangup(tty->port.tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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